Improvement in refrigerator-chambers for ships



1. F. BALDWIN.4

l Rerigerator-'Chmbers for Ships. &c.

Patented July 2,1872.V

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PII/v an. M K fosso/mss Pf? JOSEPH F. BALDWIN, OF PROVINGETOWN,MASSACHUSETTS.

IMPROVEMENT IN REFRIGERATOReCHAMBERS FOR SHIPS, &c. l

Specification forming part of Letters Patent No. 128,581, dated July 2,1872.

To alipersoas to whom thcsepreseats shalt come:

Be it known that I,Josn1 n F. BALDWIN,4

l animal and vegetable substances, and is more especially intended forships, although it is as well applicable to a similar purpose on land;and the invention particularly relates to improvements on the inventionembraced in Letters Patent issued to me, dated July 6, 1869, andnumbered 92,246. The invention consists of a refrigerator-chamber havingan ice-chest outside, but resting directly upon it, and an air-spacesurrounding its sides and communieating with it through holes at or nearits floor, and a spout or tube or tubes entering its roof, and arrangedto discharge the vapors, gases, &c., passing through them from it, (therefrigerator-chamber,) directly on their escape, against the sides ofthe ice-chest, producing their instantaneous condensation and a perfectand complete circulation of air through' the refrigerator-chamber. i

In the accompanying plate of drawing my invention is, illustrated, theligure being a transverse vertical section, showing it in connectionwith the hull and deck of a vessel.

A in the drawin g represents the hull of a vessel constructed in anysuitable and proper mode 5- B, a deck of the vessel, constructed of ironor other suitable material; a, an ice-chest above deck B, constructedwith two walls, b and c, with the inner one, c, made of metal. Betweenthe two walls b and c there is an airspace, cl, connecting with theair-space f about the sides of the preservative or refrigeratorchamberg, constructed with the hull of the vessel below the deck B; h h,vertical pipes leading into refrigerator-chamber g at its top. Thesepipes h h are located within the air-space d, between walls b and c ofice-chest, and at their upper ends are turned toward thecondensing-wall-that is, the inner one c of icechest a, causing thevapors escaping from the refrigerator-chamber g to impin ge, directly ontheir escape, against the cold wall o of icechest, condensing whatevermoisture they may contain. At the bottom of the chamber g ventilators mare placed, communicating with the interior of chamber g. A chamberconstructed as above described, any increase of temperature in the upperpart thereof produces a current of air through the pipes h (which Idwenominate condense-pipes) to the cold wall of the ice-chest, byimpinging against which the moisture contained by them is condensed,cooling the air which passes down the air-space f, around therefrigerator chamber, and from thence through the ventilator m into therefrigerator-chamber, for circulation through

